Reads pointer input events until a horizontal drag is detected or all pointers are up.
AwaitHorizontalDragOrCancellationSample
@Composable
fun AwaitHorizontalDragOrCancellationSample() {
val offsetX = remember { mutableStateOf(0f) }
val offsetY = remember { mutableStateOf(0f) }
var width by remember { mutableStateOf(0f) }
Box(Modifier.fillMaxSize().onSizeChanged { width = it.width.toFloat() }) {
Box(
Modifier.offset { IntOffset(offsetX.value.roundToInt(), offsetY.value.roundToInt()) }
.fillMaxHeight()
.width(50.dp)
.background(Color.Blue)
.pointerInput(Unit) {
awaitEachGesture {
val down = awaitFirstDown()
var change =
awaitHorizontalTouchSlopOrCancellation(down.id) { change, over ->
val originalX = offsetX.value
val newValue = (originalX + over).coerceIn(0f, width - 50.dp.toPx())
change.consume()
offsetX.value = newValue
}
while (change != null && change.pressed) {
change = awaitHorizontalDragOrCancellation(change.id)
if (change != null && change.pressed) {
val originalX = offsetX.value
val newValue =
(originalX + change.positionChange().x).coerceIn(
0f,
width - 50.dp.toPx(),
)
change.consume()
offsetX.value = newValue
}
}
}
}
)
}
}